A MIMO cognitive radio antenna system

Tawk, Y.; Ayoub, F.; Christodoulou, C.G.; Costantine, J.

doi:10.1109/aps.2013.6710946

Cited by 11 publications

(11 citation statements)

References 2 publications

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“…Several works focused on MIMO frequency reconfigurable antennas without the sensing antenna for CR applications such as those in [15][16][17]. Two-element MIMO antennas with two sensing antennas were presented in [18]. It was operating in the frequency band between 3 and 6 GHz with dimensions of 70 × 80 mm 2 .…”

Section: Research Articlementioning

confidence: 99%

Integrated reconfigurable multiple‐input–multiple‐output antenna system with an ultra‐wideband sensing antenna for cognitive radio platforms

Hussain

Sharawi

2015

IET Microwaves, Antennas & Propagation

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A compact, novel multi‐mode, multi‐band frequency reconfigurable multiple‐input–multiple‐output (MIMO) antenna system, integrated with ultra‐wideband (UWB) sensing antenna, is presented. The developed model can be used as a complete antenna platform for cognitive radio applications. The antenna system is developed on a single substrate area of dimensions 65 × 120 mm2. The proposed sensing antenna is used to cover a wide range of frequency bands from 710 to 3600 MHz. The frequency reconfigurable dual‐element MIMO antenna is integrated with P‐type, intrinsic, N‐type (PIN) diodes for frequency agility. Different modes of selection are used for the MIMO antenna system reconfigurability to support different wireless system standards. The proposed MIMO antenna configuration is used to cover various frequency bands from 755 to 3450 MHz. The complete system comprising the multi‐band reconfigurable MIMO antennas and UWB sensing antenna for cognitive radio applications is proposed with a compact form factor.

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Section: Research Articlementioning

confidence: 99%

Integrated reconfigurable multiple‐input–multiple‐output antenna system with an ultra‐wideband sensing antenna for cognitive radio platforms

Hussain

Sharawi

2015

IET Microwaves, Antennas & Propagation

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“…In [19], a UWB and double bands frequency reconfigurable antenna are presented. By using In [20][21][22][23], reconfigurable MIMO antennas for CR applications. In [20 -21], a compact multi-band frequency reconfigurable antenna is presented.…”

Section: Introductionmentioning

confidence: 99%

“…According to the states of the PIN diode and controlling the bias voltage of the varactor diode the antenna o perates with frequency tuning from (0.573-2.48) GHz and (0743-2.42) GHz with peak gain and isolation of 3.15 dB, 3.52 dB and better than -15 dB respectively. In [22], a MIMO antenna is suggested for CR applications. The antenna consists of two arrangements of patches the first comprises two reconfigurable antennas with four PIN diodes between the T -shaped slots for frequency tuning while the other is two sensing anten nas which cover the band from 3-6 GHz.…”

Section: Introductionmentioning

confidence: 99%

Compact tri-band T-shaped frequency reconfigurable antenna for cognitive radio applications

Jabber

Thaher

2020

Bulletin EEI

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This paper presents, new compact tri-band and broadband frequency reconfigurable antenna for cognitive radio applications. The proposed antenna consists of an Ultrawideband sensing antenna and reconfigurable communicating antenna at the same substrate. The sensing antenna is a UWB printed elliptical monopole antenna operates at frequency band from 2.72 to 23.8 GHz which can cover the entire UWB frequency band from 3.1 to 10.6 GHz and cover the broadband up to 20 GHz. The communicating antenna is a T-shaped frequency reconfigurable antenna operates on three bands of 7.925 GHz, 13.16 GHz, and 14.48 GHz under (S11≤-10 dB) with a fractional bandwidth of 14.55%, 6.2%, and 3.3% respectively. The proposed antenna used to operate in two modes one for cognitive radio applications to cover WiMAX, land, Fixed and Mobile satellite, Radar, and broadband applications. The frequency reconfigurability is obtained by using only one RF switch (PIN diode) for changing the operating frequency. The antenna overall dimensions are 42x30x1.6 mm3 printed on an FR-4 epoxy substrate with relative dielectric constant εr=4.3, loss tangent tan (δ)=0.002 and 50Ω microstrip line feed. The maximum obtained simulated gain is 8.5 dB at 13.16 GHz. The S11 is under -20 dB and coupling between the two antennas is less than -15 dB at the resonant frequencies.

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“…Self-structuring antennas were first studied in 1983 by Schaubert [4]; then in 1999, the Defense Advanced Research Projects Agency (DARPA) launched a program under the name Reconfigurable Aperture Program to investigate reconfigurable antennas and their potential applications [5]. From that moment, many reconfigurable antennas had been investigated and designed [6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%